CVE-2023-24626

screen: allows sending SIGHUP to arbitrary PIDs

Published Apr 8, 2023 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-28637 socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.
Ubuntu USN Ubuntu USN USN-6198-1 GNU Screen vulnerability
Ubuntu USN Ubuntu USN USN-7978-1 GNU Screen vulnerabilities
History
Type Values Removed Values Added
Weaknesses CWE-732
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
May 9, 2025, 8:03 PM
Reserved
Jan 30, 2023, 12:00 AM
Status
Modified
Published
Apr 8, 2023, 5:15 AM
Modified
Jun 17, 2026, 5:39 AM
Severity
Moderate
Public date
Apr 8, 2023, 12:00 AM